SOM
The Emcraft Systems STM32F4 System-On-Module (SOM) is a compact (30 mm x 46 mm) mezzanine module that combines a 180 MHz Cortex-M4 STM32F429 microcontroller with 32 MB SDRAM, 16 MB NOR Flash and an Ethernet PHY buffer on a single board. The SOM interfaces to a baseboard (motherboard) using two 80-pin interface connectors.
 Click to enlarge
Emcraft develops and maintains a Linux software distribution for the STM32F4 SOM, including Linux (uClinux) BSP (Board Support Package), U-Boot firmware and a Linux-hosted cross-development software environment.
Starter Kit
The STM32F4 SOM starter kit (KIT-STM32F4-EXT) provides a low-cost hardware platform enabling development of Linux applications using the STmicroelectronics STM32F4 devices. The kit includes the STM32F4 System-on-Module, a SOM-BSB-EXT development baseboard, and a mini-USB cable for USB-based power and serial console.
The baseboard is 100x70 mm in size and has the following main interfaces:
- USB interface using USB-UART bridge connected to UART of the STM32F4
- 10/100 Ethernet interface and RJ-45 connector
- USB OTG Interface and mini-USB connector
- Standard 20-pin ARM JTAG interface
- User LEDs and push-button
- Unused STM32F4 signals available on a breadboard area.
Click to enlarge
The Linux BSP and the development environment for the STM32F4 SOM starter kit are available for free download from Emcraft's web site. Each starter kit comes preloaded with uClinux and U-Boot.
Hardware
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STM32F4 SOM Hardware Resources
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Here you will find hardware specifications, design files and various hardware materials describing the STM32F4 System-On-Module and the Starter Kit.
If you would like to ask any question about the kit hardware architecture, please do not hesitate to contact us.
| STM32F4 SOM Resources |
Download |
Version # |
Date |
| Photos |
| STM32F4 SOM top view |
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2A
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Dec 10, 2013
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| STM32F4 SOM bottom view |
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2A
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Dec 10, 2013
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| STM32F4 SOM being plugged into SOM-BSB-EXT baseboard |
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Dec 10, 2013
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| High-Level Diagrams |
| STM32F4 SOM high-level diagram |
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2A
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Nov 26, 2020
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| SOM-BSB-EXT baseboard high-level diagram |
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1A
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Dec 19, 2013
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| Hardware Documentation |
STM32F4 SOM hardware architecture specification
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 |
1.6
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Nov 26, 2020
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STM32F4 SOM pin-out
(requires registration and login) |
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2A |
Coming soon |
| STM32F4 SOM environmental specification |
 |
2A |
May 27, 2015
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| STM32F4 SOM baseboard hardware architecture specification |
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1.1
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Dec 19, 2013
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| STM32F4 SOM power consumption |
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2A |
May 25, 2015
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| STM32F4 SOM CE certificate |
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2A |
Jun 23, 2015
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| STM32F4 SOM RoHS certificate |
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2A |
Sep 21, 2016
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| Hardware Materials |
STM32F4 SOM 3D model
(requires registration and login) |
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2A
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Oct 23, 2015
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SOM-BSB-EXT schematics
(requires registration and login) |
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1A
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Mar 11, 2018
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SOM-BSB-EXT Bill-Of-Materials (BOM)
(requires registration and login) |
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1A |
Dec 11, 2012
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SOM-BSB-EXT mechanical drawing
(requires registration and login) |
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1A
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Apr 1, 2013
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SOM-BSB-EXT baseboard CAD design package (Altium Designer)
(requires registration and login) |
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1A
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Dec 17, 2013
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Software
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STM32F4 System-On-Module
Release Materials
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Emcraft supports Linux (uClinux) as an operating system for the STM32F4 System-On-Module (SOM). This page provides the release files of the STM32F4 SOM Linux BSP (Board Support Package) and the Linux software development environment.
All STM32F4 System-On-Modules come preloaded with uClinux and U-Boot. Full source code of the Linux BSP and U-Boot is provided for free download, along with a Linux cross-development environment. Both U-Boot and uClinux are roaylty-free.
| Resources |
Download |
Version #
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Date
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| Release Files |
| Release Notes. Read this to understand features supported by this release of the product. |
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2.0.0
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May 12, 2016 |
| Migration from earlier releases to Release 2.0.0 |
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2.0.0
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May 12, 2016
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STM32F429 SOM Linux Board Support Package (BSP) and software development environment
(requires registration and login) |
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2.0.0
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May 12, 2016 |
| GNU toolchain for uClinux Cortex-M3/M4 |
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2010q1 |
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Prebuilt Linux image ready to be loaded to the STM32F4 SOM
(requires registration and login)
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2.0.0
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May 12, 2016 |
Prebuilt U-Boot image ready for installation onto the STM32F4 SOM
(requires registration and login)
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2.0.0
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May 12, 2016 |
Docs
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STM32F4 System-On-Module
Documentation
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This page provides various documentation materials for the STM32F4 System-On-Module (SOM).
If you are just starting to use the STM32F4 Starter Kit, read through the documentation materials in the order they are listed below. If you are looking for an answer to a concrete question, refer to Subject to understand the category of each specific documentation item.
| Resource |
Subject
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Download |
Date
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| Application Notes |
| Setting up the STM32F4 SOM starter kit |
#kit |
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May 12, 2016
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| Running U-Boot |
#uboot |
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May 12, 2016
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| Using U-Boot environment |
#uboot |
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May 10, 2016
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| Autobooting Linux from U-Boot |
#uboot |
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May 12, 2016
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| Loading Linux images via Ethernet and TFTP |
#uboot |
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May 12, 2016
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| Installing Linux images to Flash |
#uboot |
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May 12, 2016
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| Loading Linux Images over UART |
#uboot |
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May 12, 2016
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| Installing and activating cross development environment |
#tools |
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May 12, 2016
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| Cross development environment: dependency on host components |
#tools |
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May 12, 2016
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| Cross development environment: distribution tree |
#tools |
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May 12, 2016
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| Building Linux |
#tools |
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May 12, 2016
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| Understanding development workflow |
#tools |
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May 12, 2016
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| Running TCP/IP stack in Linux |
#connectivity |
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May 17, 2016
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| Using STM32F4 On-Chip RTC in Linux |
#io |
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June 3, 2016
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| Using STM32 UART ports in Linux |
#io |
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Aug 25, 2016
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| Flash Management and JFFS2 File System |
#storage |
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June 2, 2016
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| Building user-space applications |
#tools |
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June 3, 2016
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| Building multi-threaded applications |
#tools |
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June 3, 2016
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| Building C++ applications |
#tools |
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June 3, 2016
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| Setting the stack size for a user-space application |
#tools |
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June 3, 2016
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| Understanding what causes SEGV in an application |
#tools |
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June 3, 2016
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| Managing U-Boot Environment from Linux |
#uboot
#init |
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June 3, 2016
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| Remote debugging with GDB |
#tools |
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March 29, 2017
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| Debugging with Eclipse |
#tools
#debug
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Dec 1, 2017
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| Building uClibc |
#tools |
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June 3, 2016
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| External Resources |
| Windows device driver for the USB/UART chip |
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| Windows TFTP server |
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| How to set up NFS |
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| O'Reilly's "Linux Device Drivers" |
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| Joseph Yiu's "Definitive Guide to the ARM Cortex-M3" |
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Design Kit
For those customers who have successfully evaluated the STM32F4 System-On-Module and would like to proceed with designing the SOM into embedded product, Emcraft System provides the STM32F4 SOM Design Kit.
The STM32F4 SOM Design Kit is an advanced product, separate from the STM32F4 SOM Starter Kit.
The kit is comprised of the following materials and services:
- The STM32F4 System-On-Module (SOM) schematics (PDF file only). The package is provided as an advanced hardware material allowing hardware designers to understand subtle points of the SOM implementation and interface.
- Suggested STM32F4 SOM to baseboard mapping (Excel file). Upon purchase of the kit, you will be able to send a list of I/O requirements for your application to Emcraft. Emcraft will review and return an Excel file with recommended mapping of I/O interfaces from the SOM to your custom baseboard.
- 1 (one) review of your custom STM32F4 SOM baseboard schematics (SOM interface section only), with detailed comments returned over email.
| STM32F4 SOM Design Kit Materials |
Download |
Version # |
Date |
STM32F4 System-On-Module (SOM) schematics (PDF format)
(requires purchase of both Starter Kit and Design Kit) |
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2A
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Dec 17, 2013
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Order
Contact Emcraft to receive detailed pricelists or place an order.
If you would like to purchase the standard configuration of the STM32F4 SOM in small quantity (up to 100 units) and don't want to go through the formal PO process, you can make a purchase at the Emcraft online store.
Due to market conditions, please contact us about part availability.
| Part Number |
Description |
| SOM-STM32F4 |
STmicro STM32F429, 180MHz,
Industrial (-40 to +85C), 32MB SDRAM,
16MB NOR Flash, ETH PHY |
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